The Cascading FlashCopy support enables a FlashCopy source device to become a FlashCopy source, or a FlashCopy target device to become a FlashCopy source.

This capability provides improvements to a range of Copy Services scenarios, but essentially enables the reversal of one of several FlashCopy relationships without first withdrawing the other relationships.

This publication explores a range of use cases, explaining the improvements and benefits of the Cascading FlashCopy.